Apparatus for the manufacture of sulfuric anhydrid.



Patented Dec. l0, |90I. R. KNIETSCH.

APPAKRATUS FR THE MANUFACTURE 0F SULFUHIC ANHYDRID.

(No Model.)

WiTN ESSES (Application filed Nov. 23, 1899.)

2 Sheets-Sheet l.

INVENTQR ATTORNEYS.

No. 688,470. Patented Deo. l0, 190|.

R. KNIETscH. APPARATUS FOR THE MANUFACTURE 0F SULFURIC ANHYDRID.

(Application filed Nov. 23, 1899.)

(No Model.) 2 Sheets-Sheet 2.

u il

y, WITNESSES l I wel? 'l pa/ da (QAM i ATTORNEYS.

minerals Patins. co. PHoTo-Lxwo.. wAsmNcJoN, nA c.

UNITED STATES'. PATENT OFFICE.

RUDOLF KNIETSOH, OF LUDVVIGSHAFEN, GERMANY, ASSIGNOR TO THE BADISCHE ANILIN- du SODA-FABRIK, OF LUDWIGSHAFEN, GERMANY,

A CORPORATION OF GERMANY.

APPARATUS FOR THE MANUFACTURE `OF SULFURIC ANHYDRID.

SPECIFICATION forming part of Letters Patent No. 688,470, dated December 10, 1901. Original application filed .Tuly 14, 1898, Serial No. 685,969. Divided and this application tiled November 23. 1899. Serial To all whom t may concern:

Be it known that I, RUDOLF KNIETsoH, doctor of philosophy, a subject of the King of Prussia, Emperor of Germany, residing at Ludwigshafen-on-the-Rhine, in the Kingdom of Bavaria and Empire ofl Germany, have invented new and useful Improvements in Apparatus for the manufacture of Sulfuric Anhydrid, of which the following is a specification.

In my application, Serial No, 685,969, of July 14, 1898, I have described the apparatus which is the subject of this application and have included it within the genericclaims, and I have led this as a division of said application for the purpose of securing specific claims for said apparatus.

The form of apparatus here particularly described and claimed is adapted for carrying out the cooling, not by the sulfurous gases, but by means of some other cooling medium, such as air, and the proper amount of heat is transferred from the so-heated cooling lnedium-say air-by means of proper mechanical appliances to the sulfurous gas to be operated upon. Such mechanical appliances are well known in the art, and their position in the apparat-us is merely indicatedlin these drawings.

In the accompanying drawings, Figure lis an elevation, partly in section, of an apparatus embodying my invention. Fig. 2 is a similar elevation of a modied form of said apparatus. Fig. 8 is a detail in section of the temperature-regulator.

Fig. 1 shows brickwork M inclosing the Wall S2, thus forming the annular cooling-space S'. S2 may be of sheet-iron. Within the wall S2l is the contact-'chamber R, containing contact material. (Indicated by the broken sectionlines.) h, situated at or near the` bottom of the space S,-is a source of heat, which is easily andquickly regulatable, such as gasflames, and serves primarily to heat up the apparatus in order to start the operation, butmay be used to maintain the proper temperature in the apparatus for successful'working. The fan or ventilator V forces the air used for cooling the contact-chamber through the temperature-regulator G, where the tempera- (No model.)

The air or other cooling medium,- having cooled the contact-chamber, leaves the cooling-chamber S at A, and being at an elevated temperature because of this cooling action the heat contained in it can be used in any suitable manner-sas, for example, by transfer to the sulfurous gas to be operated upon.

This can be effected by passing this heated air through the heat-interchanger H. The sulfurousgas to be operated upon may pass entirely by way of O through the heat-interchanger H into F', into D, and then into the contact-chamber R, or partly in this manner `and partly directly by way of F into D and R.. `The gas containing sulfuric anhydrid leaves the apparatus at C and can then be worked up or used in any suitable way.

In Fig. 2 parts corresponding to certain parts of Fig. l bear corresponding letters. V represents a fan or ventilator forcing the air through E into the chamber S, where it impinges upon the contact-chamber at its hottest part, thereby energetically cooling the same, and then the so-heated air leaves through A or A', or both, and passes through Y' H, leaving the apparatus at the upper exit, as shown. The gas to be operated upon entering at O can pass through F2 into the heatinterchanger H, thereby absorbing heat from the cooling gas, which has become heated through its cooling action, and proceeding through F and D into the contact-chamber R, or the gas can pass directly through O and F or partly by way of O and F and partly by Way of O and F2 into D and the contact-chamber R. The gas containing sulfuric anhydrid leaves the apparatus at C and can then IOO be worked up or used in any suitable way. V5, VG, V7, V8, V9, V10, V, and V12 are valves for cont-rolling the {iow of gas and air through the pipes.

I claim- 1. In an apparatus for the manufacture of sulfuric anhydrid by the contact process, in combination with the contact material, a receptacle for the same Vcontaining ingress and egress openings, an inclosure forming a cooling-medium passage adjacent to said receptacle, a regulator whereby the temperature of the cooling medium is controlled before entering said inclosure and a transferrer whereby heat contained in said cooling lnedium after it leaves said passage is communicated to the sulfurous gas to be operated upon.

2. In an apparatus for the manufacture of sulfuric anhydrid by the contact process, in combination with the contact material, a receptacle for the same containing ingress and egress openings, an inclosnre forming a cooling-medium passage adjacent to said receptacle and a transferrer whereby heat contacle, a second inclosure forming a second 35 cooling-medium passage adjacent to said first inclosure, means for regulating the temperature of said second passage and a transferrer whereby heat contained in said cooling medium after it leaves a cooling-medium pas- 4o sage is transferred to the sulfurous gas to be operated upon.

In testimony whereof I have hereunto s'et my hand in the presence of two subscribing witnesses.

RUDOLF KNIETSCII.

Witnesses:

ERNEST F. EHRHARDT, BERNHARD C. HEssE. 

